The 30 largest companies in Marion (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Indiana Wesleyan University indwes.edu A private Christian university in Indiana committed to developing students in character, scholarship, and leadership through a Christ-centered academic community	Higher Education	🇺🇸 Marion	2,714	1920
2	Marion Health marionhealth.com A trusted not-for-profit healthcare provider with advanced medical services, state-of-the-art facilities, skilled staff, and award-winning programs, serving rural areas with excellence	Hospitals and Health Care	🇺🇸 Marion	977	n/a
3	Marion Community Schools marion.k12.in.us A public school system in Grant County, Indiana, serving 3,600 students Focused on preparing students to reach their full potential and thrive in society	Education Administration Programs	🇺🇸 Marion	875	n/a
4	McDowell County Schools mcdowell.k12.nc.us Education management company located in Marion, NC, providing educational services in McDowell County	Education Administration Programs	🇺🇸 Marion	690	n/a
5	Cafe Valley, Inc.cafevalley.com A baked food production company in Phoenix, Arizona, with additional facilities in Marion, IN, specializing in high-quality baked goods	Food and Beverage Manufacturing	🇺🇸 Marion	654	1987
6	Linn-Mar Community Schools linnmar.k12.ia.us A school district in Marion, Iowa serving 7,700 PreK-12 students with 12 school buildings, including elementary, intermediate, middle, and high schools	Primary and Secondary Education	🇺🇸 Marion	642	1949
7	Pepsi MidAmerica pepsimidamerica.com A family-owned company based in Marion, Illinois, distributing quality Pepsi products to 5 states while supporting the community through philanthropy	Food and Beverage Services	🇺🇸 Marion	560	1936
8	Marion Technical College mtc.edu A public two-year college in Marion, Ohio offering various certificate and degree programs, internship opportunities, and transferable credits to four-year institutions	Higher Education	🇺🇸 Marion	418	1970
9	Marion City Schools marioncityschools.org Inspiring a community of achievement through innovative educational programs for academic, college, and career success	Primary and Secondary Education	🇺🇸 Marion	361	n/a
10	Tabor Academy taboracademy.org The company provides a globally connected education that empowers students to connect, serve, and lead in solving complex challenges	Primary and Secondary Education	🇺🇸 Marion	312	1876
11	AISIN Manufacturing Illinois aisinillinois.com Manufacturer of automotive products including Sunroofs, Slide and Back Door components, Center Pillar Garnishes, and Door Handles for major industry customers	Industrial Machinery Manufacturing	🇺🇸 Marion	309	2002
12	Slingshot slingshotedu.com Slingshot provides Equitable Access course material delivery solutions for institutions, offering affordable options for every student by the first day of class	Higher Education	🇺🇸 Marion	260	1997
13	IWU National & Global indwes.edu Provider of flexible learning programs, including undergraduate, graduate, certification, and workforce training, offered online or at regional education centers in Indiana, Kentucky, or Ohio	Higher Education	🇺🇸 Marion	240	1920
14	TC Restaurant Group tcrestaurantgrp.com A leading hospitality group in Nashville, TN, with dynamic entertainment venues, celebrity-branded concepts, partnerships with country artists, karaoke, and pizza locations	Hospitality	🇺🇸 Marion	201	n/a
15	Wyandot USA, LLC.wyandotsnacks.com Custom manufacturer of high-quality grain-based snacks, cereals, and better-for-you offerings for global food marketers, restaurants, and retailers with extensive technical support	Food and Beverage Services	🇺🇸 Marion	198	1936
16	ESCO Automation scintillaholdings.com A mid-sized company offering plant automation, electrical construction, design, and safety training to clients, prioritizing long-term relationships and trust	Automation Machinery Manufacturing	🇺🇸 Marion	185	1964
17	META Solutions (Metropolitan Educational Technology Association)metasolutions.net The company focuses on enhancing education through data-driven solutions, technology implementation, and instructional support for schools to foster a culture of learning	Education Administration Programs	🇺🇸 Marion	182	2015
18	Carey Services careyservices.com Empowering individuals by turning their abilities into opportunities, creating a world where all people are valued and equal in the community	Individual and Family Services	🇺🇸 Marion	171	1954
19	Deaconess Illinois Medical Center deaconessillinoismedicalcenter.com A 106-bed facility providing a wide range of health services including diagnostic, medical, surgical, and emergency care to Williamson County residents	Hospitals and Health Care	🇺🇸 Marion	160	n/a
20	Tri-Rivers Career Center tririvers.com Career tech training center offering skills education for high school and adult students, specializing in robotics training and certifications for a global job market	Education Administration Programs	🇺🇸 Marion	160	1976
21	Rankings.io rankings.io A specialized SEO agency for attorneys, focusing on personal injury law firms, delivering exceptional results with a competitive edge and razor-sharp skills	Marketing Services	🇺🇸 Marion	157	2013
22	Nachurs Alpine Solutions nachurs-alpine.com Leading North American manufacturer of specialty liquid fertilizers and industrial products marketed under NACHURS®, ALPINE®, and NASi®️ brands with multiple manufacturing plants across the continent	Chemical Manufacturing	🇺🇸 Marion	154	1946
23	LimoLink limolink.com A customer-focused transportation company that provides top-notch service, innovative technology solutions, and a team-oriented work environment	Hospitality	🇺🇸 Marion	151	1998
24	Southern Illinois Power Cooperative sipower.org A generation and transmission cooperative in Illinois providing wholesale power to distribution cooperatives and customers, owning coal, natural gas, hydro, and wind generation plants	Utilities	🇺🇸 Marion	32	1948
25	Peerless Machine & Tool Corporation peerlessmachine.com A global leader in paper converting equipment, specializing in thermal forming presses and tooling for paper plate, tray, and bowl production	Machinery Manufacturing	🇺🇸 Marion	27	1922
26	CenMac Metalworks cenmacmetalworks.com Family-owned manufacturing company specializing in laser-cutting, forming, CNC machining, welding, plasma cutting, and metal stamping for various industries	Industrial Machinery Manufacturing	🇺🇸 Marion	24	1960
27	Marion by Akona marionsolutions.com A global provider of custom processing solutions for various industries, offering American-made craftsmanship and tailored solutions to meet specific application needs	Machinery Manufacturing	🇺🇸 Marion	18	1938
28	Polymer Engineering Corporation polymerengineering.net Specializing in design engineering and precision manufacturing of critical sealing materials and plastic components, a recognized leader in the industry	Plastics Manufacturing	🇺🇸 Marion	12	2014
29	Pro Prep and Fulfillment weprepship.com Product prep and fulfillment company offering customized solutions for ecommerce sellers, including labeling, bundling, warehousing, and order fulfillment services with quick turnaround times	Warehousing and Storage	🇺🇸 Marion	10	2017
30	Barnes Manufacturing Services barnesmfg.com Design, engineer, and manufacture metal fabricated products, solving manufacturing challenges and advancing industry with a focus on helping businesses achieve production goals	Industrial Machinery Manufacturing	🇺🇸 Marion	5	1968

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

The same list elsewhere in United States

The largest companies in the United States 91,669
The largest companies in California 12,813
The largest companies in New York State 10,485
The largest companies in Texas 8,086
The largest companies in Florida 4,945
The largest companies in Illinois 4,175
The largest companies in Pennsylvania 3,110
The largest companies in Massachusetts 3,093
The largest companies in Georgia 2,632
The largest companies in Ohio 2,618
The largest companies in New Jersey 2,569
The largest companies in Virginia 2,503
The largest companies in Michigan 2,346
The largest companies in North Carolina 2,174
The largest companies in Alabama 1,806
The largest companies in Washington State 1,785
The largest companies in Colorado 1,774
The largest companies in Minnesota 1,700
The largest companies in Maryland 1,527
The largest companies in Wisconsin 1,482
The largest companies in New York 6,920
The largest companies in San Francisco 2,030
The largest companies in Houston 1,791
The largest companies in Chicago 1,668